Improvement in machines for boring hubs



E. B. DECKER.

MACHINE FOR 30mm 3113s.

Patented Jan. 4,1876.

Wb'lizassas: Invenlfifu ,on said standards,

U1\Tr.riz::o STATES" PATENT EDWARD B.'DEOKER, OF ROOKBRIDGE, ILLINOIS.

IMPROVEMENT IN MACHINES FOR BORING HUBS.

Specification forming part of Letters Patent No. 171,779, dated January 4,1876; application filed September 17, 1875.

To all whom it may concern Be it known that I, EDWARD B. DECKER, of Rockbridge, in the county of Greene and State of lllinois, have invented certain new and useful Improvements in Machines for Boring Hubs, of which the following is a specification:

This invention relates to an improved machine for boring or reaming the hubsof wheels, its object being to provide such a machine, by means of which a straight hole or a tapering readily and conveniently bored through the hubs of wagon or carriage wheels for the insertion of thimbleskeins or bushing therein.

The improvements will be fully hereinafter described, and specifically pointed out in the claims, and a preliminary description is there- .fore deemed unnecessary.

In the drawing, Figure 1 represents a perspective view of my machine, and Fig. 2a sectional view directly through the hub and the center of the machine.

The letter A represents a strong frame, constructed of wood or other suitable mate'- rial, and mounted on the legs B. O O repre sent two semi-cylindrical collars, setting in the vertical slots D D in the frame A,- in which they are adjustable up and down by means of the screws E E, which work through the cross-pieces e e, secured to the lower side of the frame, their ends bearing against the under sides of the collars O G. The hub F of the wheel sets in and is supported by the said collars when in position to be bored, and may be elevated or depressed to adjust it to the cutter, as will be evident. G G represent two spring-bars extending across the frame A, immediately over each collar 0, and secured to the standards H H, attached to the frame A by means of the pins 7th, in such manner that they can be elevated or lowered so as to adjust their position to hubs of different sizes. The letter I represents a sliding carrier, set between ways a. a in the frame A. Said carrier is provided with upright standards 1 l, slotted at their upper ends for the reception of the cutter-bar K, which is confined and adjusted therein by means of the the front of the front standard is formed a hole of any desired taper can be screws L Land wedge M. To

recess, N, over which is set and secured'a plate, 0, provided with an aperture, P, in the center, of such shape as to admit of the insertion of a square-headed screw, R, and lock it in the recess when inserted. Said screw is represented by the letter R, and err-- tends directly through the hub and the screw nut or plate S, fitted tightly against its outside end, so as to revolve with it and advance the sliding carrier toward the hub, in order to force the cutter-bar through it. The cutterbar is provided with a tool or cutter, T, which is secured in a recess in the end of the same by means of a bindingscrew, V, or by any other suitable means.

The operation of my machine will be readily understood from the foregoing description. The wheel is placed in resting in the semicircular collars, which are adjusted by means of their respective screws to the proper height. The spring-bars are then secured over the hub of the wheel, so as to keep it securely in the collars. The cutterbar is then adjusted to the proper position by means of the wedge and the bindingscrews; and, lastly, the square-headed screw is secured to the sliding frame and passed through the hub, the screw plate or not being screwed on its end until it sets closely against the outer end of the hub. Then, on rotating the hub in the proper direction, the cutterbar and tool or cutter willbe drawn through the hub as it revolves, properly boring or reaming the same. i

If desired, the hub may be bored from each end by changing the collars and reversing the position of the hub when bored half through. p

[am aware of the Letters Patent granted to Humphries on the 2d of February, 1869, No. 86,402, and I disclaim the construction therein shown and described, as such is not my invention. I

Having thus described my invention, what I claim, and desire to secure by Letters Patcut, is I 1. The combination, substantially as described, ofa frame, A, the vertical standards H, arranged at the spr ng-bars G, arranged to bear on the hub, the vertically-adjustable collars O, and the the machine, the hub ends thereof, the parallel EDWARD B. DECKER.

ori'zmicail wrin "mechanism jfdr boriti g che peuing through the hlibfias's'tit fd rth; 2. The combination of th e frame A, the adlstable collars 0 C, thes ipifg bars G-G,-the= liding frame I and itsaldju fable cross-bar, ml the sqna'raheaded screw 3, "and screw; late or nut; S, constructed to operate as hown and described, and for the purpose pecified. 1 1

Witnesses:

NEIL Boss, Isuc P. B'mtndn. 

